LCD_KCAL: Color Control driver for Nexus 5

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	drivers/video/msm/mdss/mdss_mdp_pp.c
defconfig: copy fluxi's defconfig to cyanogenmod_hammerhead_defconfig

Also enable LCD_KCAL driver
Merge branch 'kitkat-4.4' of https://github.com/myfluxi/kernel_msm into kitkat-4.4